Book cover



FIG. 1 is a perspective view of the interior of a bookcover showing our new design in a fully opened position;

FIG. 2 is a perspective view of the exterior thereof; and,

FIG. 3 is a perspective view thereof in a fully closed position, in use with a book shown in broken lines for illustrative purposes only, forming no part of the claimed design. 

The ornamental design for book cover, as shown and described. 